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Finding the Fourth Proportional to 397.92, 600.60 and 397.92

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Solution

The fourth proportional to 397.92, 600.60 and 397.92 is: 600.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.92 : 600.60 = 397.92 : x
  2. Step 2: Convert to fraction form
    397.92/600.60 = 397.92/x
  3. Step 3: Cross multiply
    397.92x = 600.60 × 397.92
  4. Step 4: Simplify right side
    397.92x = 238,990.75
  5. Step 5: Solve for x
    x = 238,990.75/397.92
  6. Step 6: Final answer
    x = 600.60

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.